81 lines
2.8 KiB
Nim
81 lines
2.8 KiB
Nim
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# Stint
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# Copyright 2018 Status Research & Development GmbH
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# Licensed under either of
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#
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
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#
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import ../stint, unittest, stew/byteutils, test_helpers
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template chkToBytesLE(chk: untyped, bits: int, hex: string) =
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let x = fromHex(StInt[bits], hex)
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chk toBytes(x, littleEndian).toHex() == x.dumpHex(littleEndian)
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template chkToBytesBE(chk: untyped, bits: int, hex: string) =
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let x = fromHex(StInt[bits], hex)
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chk toBytes(x, bigEndian).toHex() == x.dumpHex(bigEndian)
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template chkFromBytesBE(chk: untyped, bits: int, hex: string) =
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let x = fromHex(StInt[bits], hex)
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let z = fromBytesBE(StInt[bits], toByteArrayBE(x))
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chk z == x
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template chkFromBytesLE(chk: untyped, bits: int, hex: string) =
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let x = fromHex(StInt[bits], hex)
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let z = fromBytesLE(StInt[bits], toByteArrayLE(x))
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chk z == x
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template chkEndians(chkFunc, tst, name: untyped) =
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tst astToStr(name).substr(3):
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name(chkFunc, 64, "abcdef1234567890")
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name(chkFunc, 128, "abcdef1234567890abcdef1234567890")
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name(chkFunc, 256, "abcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890")
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template testEndians(chkFunc, tst: untyped) =
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chkEndians(chkFunc, tst, chkToBytesLE)
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chkEndians(chkFunc, tst, chkToBytesBE)
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chkEndians(chkFunc, tst, chkFromBytesLE)
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chkEndians(chkFunc, tst, chkFromBytesBE)
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static:
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testEndians(ctCheck, ctTest)
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suite "Testing endians":
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test "Endians give sane results":
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check:
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1.i128.toByteArrayBE() ==
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[0'u8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]
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1.i128.toByteArrayLE() ==
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[1'u8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
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1.i128 == Int128.fromBytesBE(
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[0'u8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1])
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1.i128 == Int128.fromBytesLE(
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[1'u8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0])
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-1.i128.toByteArrayBE() ==
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[255'u8, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255]
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-2.i128.toByteArrayBE() ==
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[255'u8, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 254]
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-1.i128.toByteArrayLE() ==
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[255'u8, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255]
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-2.i128.toByteArrayLE() ==
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[254'u8, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255]
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-2.i128 == Int128.fromBytesBE(
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[255'u8, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 254])
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-2.i128 == Int128.fromBytesLE(
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[254'u8, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255])
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testEndians(check, test)
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